CN209213106U - A kind of pressure reducer that output performance is stable - Google Patents
A kind of pressure reducer that output performance is stable Download PDFInfo
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- CN209213106U CN209213106U CN201821826552.8U CN201821826552U CN209213106U CN 209213106 U CN209213106 U CN 209213106U CN 201821826552 U CN201821826552 U CN 201821826552U CN 209213106 U CN209213106 U CN 209213106U
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Abstract
The utility model relates to a kind of pressure reducer that output performance is stable, including valve body, the first relief chamber, the second relief chamber, level-one regulation component and second voltage regulation component are provided in valve body；Level-one regulation component includes level-one pressure spring, guide pin, primary lever, level-one pull rod, level-one voltage regulation diaphragm, balance pivot, high pressure venthole, level-one valve port；Second voltage regulation component includes plunger shaft, piston rod, second level valve port, second voltage regulation spring, second level diaphragm platen, second voltage regulation diaphragm, valve stem, valve stem seat；The low pressure gas outlet of the pressure reducer is provided with Venturi tube and venturi orifices, when pressure reducer output flow is larger, under Venturi effect effect, the acceleration of second voltage regulation diaphragm is driven to move down, keeps the opening of second level valve port 7 bigger, guarantee that output pressure does not decline to a great extent；The pressure reducer outlet pressure pulsations range of this programme can control within 0.1bar, and such automotive service state is more stable, while being able to extend its service life.
Description
Technical field
The utility model relates to pressure reducer fields, and in particular to a kind of pressure reducer that output performance is stable.
Background technique
Currently, there is row when the clean fuels such as liquefied gas (LPG), compressed natural gas (CNG), lighter hydrocarbons are used as motor vehicle fuel
Put the advantages such as exhaust gas is few, the thermal efficiency is high, price is low.Pressure reducer is one of the important spare part of natural gas engine gas system,
The quality of pressure reducer performance directly influences the accurate control of engine fuel.
Disadvantage of the prior art is that: during pressure reducer inlet pressure is down to 0.7MPa from 20MPa, pressure reducer outlet
Range of pressure fluctuations is very big (about 0.3bar)；Automobile-used pressure reducer rate of discharge is smaller；Cost is relatively high, and service life is short.
A kind of automobile pressure reducing valve of publication number CN104595498A is solved the problems, such as by following technical essential: a kind of automobile subtracts
Pressure valve, including valve body are provided with air inlet and air outlet on valve body, relief chamber are provided in valve body, is provided with and subtracts in relief chamber
Splenium and control unit for controlling outlet pressure, relief chamber include the second relief chamber and the first relief chamber, and control unit is two,
And each control unit is respectively acting on the second relief chamber and the first relief chamber；First relief chamber passes through level-one valve port phase with air inlet
Even, the first relief chamber is connected with the second relief chamber by the second relief portion, and gas outlet is connected on the second relief chamber；For controlling
The control unit of first relief chamber includes that the first spring, the first valve rod, primary diaphragm, lever block and the first plate washer, primary diaphragm are set
It sets in the side for deviating from the first relief chamber, the two sides of primary diaphragm are separately connected one end of the first valve rod and the first spring, and first
The other end of the other end and valve body contact of spring, the first valve rod is located in the first relief chamber, lever block be located at the first valve rod and
Transmitting between level-one valve port for power between the two；Control unit for controlling the second relief chamber includes second spring, second
Valve rod, secondary diaphragm and the second plate washer, secondary diaphragm are arranged in away from the side of the second relief chamber, the two sides difference of secondary diaphragm
One end of the second valve rod and second spring, the other end and valve body contact of second spring are connected, the other end of the second valve rod is located at
In second relief chamber, the second relief portion is formed between the second valve rod and valve body.
Above-mentioned patent reduce to a certain extent pressure reducer inlet pressure from 20MPa be down to 0.7MPa during fluctuation
Range but still deposits the short problem of service life, such as rubs back and forth between lever block and level-one valve port, so that its surface is ground
Damage causes precision to reduce so as to shorten service life.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of pressure reducer that output performance is stable,
Pressure reducer outlet pressure pulsations range can control within 0.1bar, and such automotive service state is more stable, while can
It prolongs its service life.
The purpose of this utility model is achieved through the following technical solutions:
A kind of pressure reducer that output performance is stable, including valve body, high-voltage electromagnetic valve member, high-voltage electromagnetic valve seat, the valve
It is provided with the first relief chamber and the second relief chamber in vivo, first relief chamber and the second relief chamber are respectively arranged with level-one pressure regulation
Component and second voltage regulation component；
Level-one regulation component includes level-one pressure spring, guide pin, primary lever, level-one pull rod, level-one voltage regulation diaphragm, thick stick
Bar fulcrum, high pressure venthole, level-one valve port；High pressure gas is sent into one-step valve by high pressure venthole by high-voltage electromagnetic valve member
Mouthful, level-one valve port is connected with the first relief chamber；The primary lever is mounted on balance pivot, outside first relief chamber bottom
Side setting directed cavity, directed cavity is interior to be inserted into guide pin, and level-one pull rod, level-one pull rod top and primary lever are connected at the top of guide pin
Hingedly, the level-one pressure spring is located in directed cavity, level-one voltage regulation diaphragm be located at level-one pull rod and the first relief chamber bottom it
Between；
Second voltage regulation component includes plunger shaft, piston rod, second level valve port, second voltage regulation spring, second level diaphragm platen, second level
Voltage regulation diaphragm, valve stem, valve stem seat, plunger shaft are located at the top of the second relief chamber, plunger shaft built-in piston bar, piston-rod end connection
Valve rod, valve stem end protrude into valve rod base, and extend at the second level valve port between the first relief chamber and the second relief chamber, plunger shaft
Outer installation second voltage regulation spring, the second relief chamber bottom interior wall install second level diaphragm platen, second voltage regulation diaphragm；
When pressure reducer is not filled with high pressure gas, level-one pressure spring pushes level-one voltage regulation diaphragm to drive level-one pull rod upward
Movement pushes primary lever to be rotated up along balance pivot, keeps level-one valve port in the open state；It is acted in second voltage regulation spring
Under, it pushes second voltage regulation diaphragm band ovable valve stem to move downward, keeps second level valve port in the open state；
The low pressure gas outlet of the pressure reducer is provided with Venturi tube and venturi orifices, when pressure reducer output flow is larger,
Under Venturi effect effect, drives the acceleration of second voltage regulation diaphragm to move down, keep second level valve port bigger, guarantee output pressure not
It declines to a great extent；
The level-one valve port is provided with spool, and spool outside end is designed to spool sphere, corresponding, the primary lever
Groove, the flexible arc steel disc that installation is arched upward in groove, the arc steel plate and spool are designed to the contact portion of spool sphere
Sphere abuts.
Further, the valve rod is laid out using vertical hanging formula, and lower end and valve rod base clearance fit, middle part is adopted with valve body
With seal with O ring, and seal compression ratio is small.
Further, first relief chamber is provided with safety valve.
Further, the valve stem end is tapered portion, which forms sealing structure after docking with second level valve port.
Further, the low pressure gas outlet is docked with Venturi tube, and Venturi tube is provided with venturi orifices, high pressure gas
By being discharged after Venturi tube by low pressure gas outlet after depressurizing.
The beneficial effects of the utility model are: this pressure reducer is the decompression of two-stage diaphragm type, the CNG of 0.7-20MPa in steel cylinder
Gas becomes the level-one gas that pressure is about 5-6.5bar after level-one depressurizes.Become more steady after second depressurized again afterwards
Fixed output pressure.The reason of so good pressure reducer effect can be reached are as follows: 1, core component-valve rod of second voltage regulation use
Vertical hanging formula layout, lower end and valve rod base clearance fit, middle part and valve body use seal with O ring, and seal compression ratio is small,
Upper end has piston rod and plunger shaft to be oriented to, it can be ensured that valve rod is only movable in a vertical direction, reduction stem movement friction as far as possible
Power keeps stem movement flexible；2, reasonable venturi collocation structure is designed, when pressure reducer output flow is larger, in venturi
It under effect effect, drives the acceleration of second voltage regulation diaphragm to move down, keeps second level valve port bigger, under guaranteeing output pressure not substantially
Drop；3, level-one pressure regulation mainly uses lever mechanism, and when slight change occurs in first class pressure, gas pressure is acted on diaphragm
Power all can flexibly be opened and closed level-one valve port by lever mechanism, and first class pressure is made to keep relative stability.It is finally extension
Service life, for wearing terrain primary lever using the arc steel plate of elasticity as contact surface, caused by avoiding long term wear
Accuracy decline, to submit service life.
Detailed description of the invention
Fig. 1 is the utility model main perspective sectional view；
Fig. 2 is the utility model side view angle sections figure；
Fig. 3 is the utility model primary lever structural schematic diagram.
In figure, 1- venturi orifices, 2- Venturi tube, 3- safety valve, 4- low pressure gas outlet, 5- plunger shaft, 6- piston rod, 7-
Second level valve port, 8- level-one pressure spring, 9- guide pin, 101- second voltage regulation spring, 102- second level diaphragm platen, 103- second level tune
Pressuring film plate, 104- valve rod, 105- valve rod base, 106- primary lever, 107- level-one pull rod, 108- level-one voltage regulation diaphragm, 109- thick stick
Bar fulcrum, 110- high pressure venthole, 111- level-one valve port, 112- high-voltage electromagnetic valve seat, 113- high-voltage electromagnetic valve member, 114- steel
Ball, 115- arc steel plate, 116- groove.
Specific embodiment
The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing
It is not limited to as described below.
As shown in Figure 1-3,
A kind of pressure reducer that output performance is stable, including valve body, high-voltage electromagnetic valve member 113, high-voltage electromagnetic valve seat 112,
The first relief chamber and the second relief chamber are provided in valve body, the first relief chamber and the second relief chamber are respectively arranged with level-one pressure regulation group
Part and second voltage regulation component；
Level-one regulation component includes level-one pressure spring 8, guide pin 9, primary lever 106, level-one pull rod 107, level-one tune
Pressuring film plate 108, balance pivot 109, high pressure venthole 110, level-one valve port 111；High pressure gas is led to by high-voltage electromagnetic valve member 113
It crosses high pressure venthole 110 and is sent into level-one valve port 111, level-one valve port 111 is connected with the first relief chamber；Primary lever 106 is mounted on
On balance pivot 109, directed cavity is arranged in the first relief chamber bottom outside, and guide pin 9, connection at the top of guide pin are inserted into directed cavity
Level-one pull rod 107,107 top of level-one pull rod is hinged with primary lever 106, and level-one pressure spring 8 is located in directed cavity, level-one tune
Pressuring film plate 108 is located between level-one pull rod 107 and the first relief chamber bottom；
Second voltage regulation component includes plunger shaft 5, piston rod 6, second level valve port 7, second voltage regulation spring 101, second level pressing diaphragm
Disk 102, second voltage regulation diaphragm 103, valve rod 104, valve rod base 105, plunger shaft 5 are located at the top of the second relief chamber, built in plunger shaft 5
Piston rod 6,6 end of piston rod connect valve rod 104, and 104 end of valve rod protrudes into valve rod base 105, and extend to the first relief chamber and
At second level valve port 7 between second relief chamber, second voltage regulation spring 101, the second relief chamber bottom interior wall peace are installed outside plunger shaft 5
Fill second level diaphragm platen 102, second voltage regulation diaphragm 103；
When pressure reducer is not filled with high pressure gas, level-one pressure spring 8 pushes level-one voltage regulation diaphragm 108 to drive level-one pull rod
107 move upwards, and push primary lever 106 to be rotated up along balance pivot 109, keep level-one valve port 111 in the open state；?
Under second voltage regulation spring 101 acts on, pushes second voltage regulation diaphragm 103 to move downward with ovable valve stem 104, be in second level valve port 7
Opening state；
The low pressure gas outlet 4 of the pressure reducer is provided with Venturi tube 2 and venturi orifices 1, when pressure reducer output flow is larger
When, under Venturi effect effect, the acceleration of second voltage regulation diaphragm 103 is driven to move down, keeps the opening of second level valve port 7 bigger, guarantee defeated
Pressure does not decline to a great extent out；
As shown in figure 3, level-one valve port 111 is provided with spool, spool outside end is designed to spool sphere 114, corresponding,
The contact portion of primary lever 106 and spool sphere 114 is designed to groove 116, the flexible arc steel disc that installation is arched upward in groove 116
115, arc steel plate 115 is abutted with spool sphere 114.
Further, valve rod 104 is laid out using vertical hanging formula, lower end and 105 clearance fit of valve rod base, middle part and valve body
Using seal with O ring, and seal compression ratio is small.
Further, the first relief chamber is provided with safety valve 3.
Further, 104 end of valve rod is tapered portion, which forms sealing structure after docking with second level valve port 7.
Further, low pressure gas outlet 4 is docked with Venturi tube 2, and Venturi tube 2 is provided with venturi orifices 1, high pressure gas
By being discharged after Venturi tube 2 by low pressure gas outlet 4 after depressurizing.
Working principle is as follows:
When pressure reducer is not filled with high pressure gas, level-one pressure spring pushes level-one voltage regulation diaphragm to drive level-one pull rod upward
Movement pushes primary lever to be rotated up along fulcrum, keeps level-one valve port in the open state；In second voltage regulation spring-force driven dual
Under, it pushes second voltage regulation diaphragm band ovable valve stem to move downward, keeps second level valve port in the open state.
When pressure reducer is filled with high pressure gas, high pressure gas enters pressure reducer first by high pressure air intake hole, level-one valve port
Relief chamber, with the first relief chamber pressure rise, gas pressure overcomes level-one pressure spring drag to drive level-one voltage regulation diaphragm
Level-one pull rod moves downward, and rotates down primary lever along fulcrum, until closing level-one valve port.When first class pressure is reduced to one
When grade chamber gas acts on the power on level-one voltage regulation diaphragm lower than level-one pressure spring drag, level-one pressure spring overcomes first to subtract
Chamber gas pressure is pressed, again opens level-one valve port, so on circulate.Similarly, level-one gas enters the by second level valve port
Two relief chambers, when the second relief chamber gas pressure reaches certain value, secondary gas pressure overcomes second voltage regulation spring resistance, pushes away
Dynamic diaphragm band ovable valve stem moves upwards, until closing second level valve port；When secondary chamber gas pressure reduces, second voltage regulation spring is anti-
Power overcomes secondary chamber gas to act on the power on second voltage regulation diaphragm again, pushes diaphragm band ovable valve stem to move downward, opens two
Grade valve port.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (5)
1. a kind of pressure reducer that output performance is stable, including valve body, high-voltage electromagnetic valve member (113), high-voltage electromagnetic valve seat
(112), the first relief chamber and the second relief chamber are provided in the valve body, first relief chamber and the second relief chamber are set respectively
It is equipped with level-one regulation component and second voltage regulation component；
Level-one regulation component includes level-one pressure spring (8), guide pin (9), primary lever (106), level-one pull rod (107), one
Grade voltage regulation diaphragm (108), balance pivot (109), high pressure venthole (110), level-one valve port (111)；High pressure gas is by high-voltage electricity
Magnet valve component (113) is sent into level-one valve port (111) by high pressure venthole (110), and level-one valve port (111) is led with the first relief chamber
It is logical；The primary lever (106) is mounted on balance pivot (109), and directed cavity is arranged in the first relief chamber bottom outside, leads
To intracavitary insertion guide pin (9), level-one pull rod (107) are connected at the top of guide pin, level-one pull rod (107) top and primary lever
(106) hingedly, the level-one pressure spring (8) is located in directed cavity, and level-one voltage regulation diaphragm (108) is located at level-one pull rod (107)
Between the first relief chamber bottom；
Second voltage regulation component includes plunger shaft (5), piston rod (6), second level valve port (7), second voltage regulation spring (101), secondary membrane
Piece platen (102), second voltage regulation diaphragm (103), valve rod (104), valve rod base (105), plunger shaft (5) are located at the second relief chamber top
Portion, plunger shaft (5) built-in piston bar (6), piston rod (6) end connect valve rod (104), and valve rod base is protruded into valve rod (104) end
(105), it and extends at the second level valve port (7) between the first relief chamber and the second relief chamber, plunger shaft (5) installs second level tune outside
Pressing spring (101), the second relief chamber bottom interior wall install second level diaphragm platen (102), second voltage regulation diaphragm (103)；
When pressure reducer is not filled with high pressure gas, level-one pressure spring (8) pushes level-one voltage regulation diaphragm (108) to drive level-one pull rod
(107) it moves upwards, primary lever (106) is pushed to be rotated up along balance pivot (109), be in level-one valve port (111) and beat
Open state；Under second voltage regulation spring (101) effect, second voltage regulation diaphragm (103) band ovable valve stem (104) is pushed to move downward,
Keep second level valve port (7) in the open state；
It is characterized in that, the low pressure gas outlet (4) of the pressure reducer is provided with Venturi tube (2) and venturi orifices (1), work as pressure reducer
When output flow is larger, under Venturi effect effect, drives second voltage regulation diaphragm (103) to accelerate to move down, make second level valve port (7)
It is open bigger, guarantees that output pressure does not decline to a great extent；
The level-one valve port (111) is provided with spool, and spool outside end is designed to spool sphere (114), corresponding, and described one
The contact portion of grade lever (106) and spool sphere (114) is designed to groove (116), and the elastic arc to arch upward is installed in groove (116)
Shape steel disc (115), the arc steel plate (115) abut with spool sphere (114).
2. a kind of stable pressure reducer of output performance according to claim 1, which is characterized in that the valve rod (104) is adopted
It is laid out with vertical hanging formula, lower end and valve rod base (105) clearance fit, middle part and valve body use seal with O ring, and seal compression
Ratio is small.
3. a kind of stable pressure reducer of output performance according to claim 1, which is characterized in that first relief chamber is set
It is equipped with safety valve (3).
4. a kind of stable pressure reducer of output performance according to claim 1, which is characterized in that valve rod (104) end
End is tapered portion, which forms sealing structure after docking with second level valve port (7).
5. a kind of stable pressure reducer of output performance according to claim 1, which is characterized in that the low pressure gas outlet
(4) it is docked with Venturi tube (2), Venturi tube (2) is provided with venturi orifices (1), and high pressure gas passes through venturi after depressurizing
It is discharged after managing (2) by low pressure gas outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821826552.8U CN209213106U (en) | 2018-11-07 | 2018-11-07 | A kind of pressure reducer that output performance is stable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821826552.8U CN209213106U (en) | 2018-11-07 | 2018-11-07 | A kind of pressure reducer that output performance is stable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209213106U true CN209213106U (en) | 2019-08-06 |
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ID=67458472
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821826552.8U Active CN209213106U (en) | 2018-11-07 | 2018-11-07 | A kind of pressure reducer that output performance is stable |
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| CN (1) | CN209213106U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033880A (en) * | 2021-11-04 | 2022-02-11 | 重庆凯瑞动力科技有限公司 | High-pressure hydrogen pressure reducing valve |
| CN114100896A (en) * | 2021-11-19 | 2022-03-01 | 浙江大农机器有限公司 | Water outlet valve |
-
2018
- 2018-11-07 CN CN201821826552.8U patent/CN209213106U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033880A (en) * | 2021-11-04 | 2022-02-11 | 重庆凯瑞动力科技有限公司 | High-pressure hydrogen pressure reducing valve |
| CN114033880B (en) * | 2021-11-04 | 2024-02-09 | 重庆凯瑞动力科技有限公司 | High-pressure hydrogen pressure reducing valve |
| CN114100896A (en) * | 2021-11-19 | 2022-03-01 | 浙江大农机器有限公司 | Water outlet valve |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 610000 No. 317, South Road, Chengdu economic and Technological Development Zone, Chengdu, Sichuan Patentee after: Chengdu enjiwei Automobile Technology Co.,Ltd. Address before: 610000 No. 317, South Road, Chengdu economic and Technological Development Zone, Sichuan, China Patentee before: CHENGDU NGV AUTOMOBILE SYSTEM Co.,Ltd. |